Method of making vaults



A. BEGUN ET AL METHOD OF MAKING VAULTS July 13, 1937.

- RNEY Original Filed March 25, 1935 INVENTOR.

Patented July 13, 1937 I OFFEQCE METHOD or MAKING VAULTS Alexiiegun and Robert W.

assignors to American wise, Detroit, Mich, Concrete Receptical Gompany, Detroit, Mich, a corporation Original 7 application March 25, 1935,

Serial No. 12,762, new Patent No. 2,018,941. Divided and this application October 24, 1935, Se-

7 rial No. 46,496

1 Claim.

This application relates to a novel method for making burial vaults of the character disclosed in application Serial No. 12,762, filed March 25, 1935, maturing into Patent No. 2,018,941 on October 29, 1935.

The vault of the patent is a three-layer selfsealing vault composed of nested inner and outer receptacles between which is a poured asphalt receptacle. The vault comprises a body and a cover, and each of these parts is made of three receptacles, pre-formed and dried before the cover is placed upon the body so that the completion of the seal of the vault is accomplished by nothing more than the operation of placing the cover upon the body of the vault.

This application relates solely to a novel method, particularly adapted for use in making the but lial vault disclosed in the aforementioned paten The invention will presently be understood upon reference to the following detailed descriptive matter, relating to the appended drawing. In the drawing,

Fig. 1 is a top plan view, partly broken away;

Figs. 2 and 3 are fragmentary sections of the cover and body parts at the seal; and

Fig. 4 is a fragmentary section showing the vault seal as created when the cover is placed upon the body.

The vault hereof comprises a body part l0 and a cover part H, each of which parts includes three relatively nested cup-shaped receptacles, the inner and outer ones of which, referenced a and 6 respectively, are of reinforced concrete and the intermediate one of which, referenced c, is

'1 of tar or asphalt, all these having transverse walls I), f, and 03 respectively. In manufacturing such a vault, each part is separately formed. and since the process'used for manufacturing one partis identical with that used for manufacturing the other, the process of this application will be described with reference solely to the layers forming each part, without specific reference to the part manufactured.

In manufacturing a part, the first step is to pour the inner layer in a suitable expansible mold with the transverse wall of the receptacle at the top of the mold. The mold will include a shell inside the layer and a shell outside the layer, the first mentioned shell having a transverse wall supporting the transverse wall of the inner layer and the second mentioned shell including nothing more than side walls, it being understood that both shells are placed upon a suitable bed or frame. .The inner layer is poured between the two shells and when poured is left to dry for about twenty-four hours, the time depending largely upon the weather; after the inner'layer is completely dried, the outer shell is expanded about one-fourth of an inch to formaspace around the previously poured inner layer, and into this space is poured liquid asphalt to form the intermediate layer of the part, and as a matter of course the transverse wall of the intermediate layer will be on top of and will rest upon the transverse'wall of the inner layer. The intermediate layer of asphalt is left to dry for about two hours, depending upon the weather, and after it is dried the outer shell is again expanded for a distance equal to the thickness desired for the outer concrete layer; this concrete layer is then poured in the space between t e-asphalt layer and the outer'shell and its transverse wall will be on top of and will be supported by the transverse wall of the asphalt layer. The outer layer is left to dry for about twenty-four hours, depending upon the weather, after which theouter shell is removed from the formed part to expose the latter, whereupon the latter is lifted off the inner shell and removed to a place of storage.

The assembly of a body part and a cover part, each of which is formed in the manner above described and each of which is of the construction disclosed in the aforementioned patent, completes the sealing of the vault and is 'all that is necessary to form a completely sealed three-layer vault.

While three-layer vaults are by no means new, it-is believed to be new to utilize as a method of manufacturing three-layer vaults the method herein described which can be summarized briefly as follows:

(1) Casting a body part and a cover part separately, witheach part ,being cast in three steps, one step for each layer starting from the inside of the part;-

(2) Assembling the cover part and the body part to complete the vault without at the time of completion utilizing any pouring of asphalt or the like.

Now having described a method of manufacture for a concrete vault, reference should be had to the claim which follows for a determination of the monopoly sought to be covered here- 1n.

We claim:

A method for manufacturing a concrete and asphalt vault composed of two integrally joined initially separate parts, each of which is in the nature of a multi-layer cup-shaped receptacle having a peripheral wall and a transverse wall bounded by the peripheral wall which comprises making each part separately by pouring concrete around a cup-shaped inner shell and in an expansible outer shell to form an inner concrete layer of that part, with the transverse wall of that layer resting on the transverse wall of the cup-shaped shell, expanding the outer shell after that layer has dried to provide a space surrounding the innermost layer, pouring asphalt into such space and over the transverse wall of the concrete layer to form a second layer of that part having a peripheral wall and ajtransverse wall bounded by the peripheral wall of the second layer, the transverse Wall of the second layer being on and supported by the transversewall of the innermost layer, then pouring into such space and over the transverse wall of the second layer concrete to form an outer concrete layer of that part having a peripheral wall bounding a transverse wall on and supported by the transverse wall of the second layer, then removing the outer shell from the cast and dried multi layer cup-shaped receptacle, and then removing the cast and driedVcup-shaped receptacle from theinner shell and thereafter disposing one of the receptacles, bottom up, against the other, bottom down, edge to edge, so thatfthe asphalt layer of one integrates with that of the other'to form a unitary asphalt box and thus seal the vault. r

j ALEX BEGUN.

ROBERT W. WISE. 

